53131A Universal Frequency Counter, 10 digit/sec
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53131A Universal Frequency Counter, 10 digit/sec & 53132A Universal Frequency Counter, 12 digit/sec 
Measurements include frequency, frequency ratio, time interval, rise/fall time, phase, duty cycle, positive/negative pulse width, totalize, peak voltage, time interval average and time interval delay
Automated limit tests and onebutton
measurement setups for fast, easy operation Small package fits the limited space on your benchtop 
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53181A RF Frequency Counter, 10 digit/sec 
Measurements include frequency, frequency ratio (with optional channel 2), period and peak voltage Automated limit tests and onebutton measurement setups for fast, easy operation Onboard digital signal processing speeds measurements Builtin statistics feature lets you simultaneously measure average, min/max, and standard deviation Small package fits the limited space on your benchtop 
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PC Connectivity Software
IntuiLink, free PC connectivity software for many of Agilent's leading
instrument families, provides direct access from your PC applications to the
instruments that set up and take measurements. IntuiLink lets you spend less
time struggling with instrument data, and more time using it, analyzing it,
putting it to work. IntuiLink's PC Application toolbar allows you to easily
transfer measurement data and images into your familiar PC applications like
Microsoft Office Excel and Word, with little or no programming. The ActiveX
control feature allows you to control instruments from your PC, providing
builtin routines for simple test system automation that streamline repetitive
or complex tasks. Integration between instruments and key PC applications has
never been tighter.
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Product Comparison  Frequency Counters and Time Interval Counters 

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53131A

53132A

53181A

Type  Universal (2 channel)^{1}  RF (1 channel)  
Measurements 
Frequency, frequency ratio, time interval, period, rise/fall time, positive/negative pulse width, duty cycle, phase, totalize, peak voltage, time interval average, time interval delay 
Frequency, frequency ratio (with optional channel 2), period, peak voltage 

Analysis 
Automatic limit testing, math (scale and offset), statistics (minimum, maximum, mean, standard deviation) 

Frequency range (optional) 
dc to 225 MHz 
dc to 225 MHz 
dc to 225 MHz 
Resolution (frequency, time interval)  10 digits/s, 500 ps  12 digits/s, 150 ps  10 digits/s, N/A 
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A family of universal and RF counters to meet your needs 
Agilent Technologies
53131A/132A/ 181A highperformance counters give you fast, precise
frequency ¡@
Realtime digital
signal processing technology is used to analyze data while simultaneously
taking new ¡@
The 53131A/132A/181A
counters offer builtin statistics and math functions so you can scale
measurements
you set upper and
lower limits for any measurement. An analog display mode lets you see at a
glance whether ¡@
For
computercontrolled systems applications, each counter includes a standard
GPIB interface with full 
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Agilent 53131A Universal Counter 
The twochannel
53131A counter offers 10 digits per second of frequency/ period resolution
and a bandwidth time interval, pulse width, rise/fall time, phase angle, duty cycle, totalize, and peak voltage. 
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Agilent 53132A Universal Counter 
For applications
requiring higher resolution, the 53132A offers the same features and
functions as the 53131A, 
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Agilent 53181A RF Counter 
Optimized for RF
applications, the singlechannel 10 digit/s 53181A measures frequency,
period and peak 

Time Base Internal Time Base Stability (see graph 3 for timebase contribution of measurement error) 

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Standard (0¢X to 50¢X C) 
Medium Oven (Option 001) 
High Oven (Option 010) 
Ultra High Oven (Option 012 for 53132A only) 
Temperature Stability  (referenced to 25¢XC)  < 5 x 10^{6}  < 2 x 10^{7}  < 2.5 x 10^{9 }  < 2.5 x 10^{9} 
Aging Rate  Per Day:  ¡@  < 4 x 10^{8 }  < 5 x 10^{10}  < 1 x 10^{10} 
(after 30 days)  Per Month:  < 3 x 10^{7}  < 2 x 10^{7}  < 1.5 x 10^{8}  < 3 x 10^{9} 
¡@  Per Year:  ¡@  ¡@  ¡@  < 2 x 10^{8} 
¡@  ¡@  ¡@  ¡@  ¡@  ¡@ 
Turnon stability vs. time  
(in 30 minutes)  ¡@  ¡@  < 2 x 10^{7}  < 5 x 10^{9}  < 5 x 10^{9} 
¡@  ¡@  ¡@  referenced to 2 Hr  referenced to 24 Hr  referenced to 24 Hr 
Calibration  ¡@  Manual Adjust  Electronic  Electronic  Electronic 
Note that power to the time base is maintained when the counter is placed in standby via the front panel switch. The internal fan will continue to operate when in standby to maintain longterm measurement reliability. 

